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Rodents(Rodentia)are mammals of the order Rodentia, which are characterized by a single pair of continuously growing incisors in each of the upper and lower jaws. About 40% of all mammal species are rodents; they are found in vast numbers on all continents except Antarctica. They are the most diversified mammalian order and live in a variety of terrestrial habitats, including human-made environments.
Body length 23.5-26 cm. Tail length 4.1-5.9 cm. Life expectancy up to 3 years.
The body length of prairie dogs is 30-35 cm, weight is from 800 to 1400 g. Life expectancy is up to 9 years.
Its body length is 20-31.5 cm, body weight is 300-500 g. Tail is 10-16 cm. Life expectancy is up to 4 years.
The adult Crested porcupine has an average head and body length around 60 to 83 cm (24 to 33 in) long, discounting the tail, and weighs from 13 to 27 kg (29 to 60 lb).
Lifespan of this animals 15-20 years.
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